How to decode golang url.QueryEscape data in javascript?

Question

I have a string in JS side which is url.QueryEscaped.

Spaces were replaced with + sign by url.QueryEscape. They don't get converted back to space in decodeURIComponent. Should I manually do a string replace all + with space? What is the right way to decode it?

Maybe this link can help stackoverflow.com/questions/13820280/encode-decode-urls — nvcnvn
– nvcnvn, Commented Feb 1, 2014 at 14:09

James Henstridge · Accepted Answer · 2017-04-19 01:42:49Z

2

One simple method is to replace all the + characters with spaces prior to decoding. For example:

decodeURIComponent("%2f+%2b".replace(/\+/g, " "))

will correctly decode the string to "/ +". Note that it is necessary to perform the replacement prior to decoding, since there could be encoded + characters in the string.

edited Apr 19, 2017 at 1:42

answered Feb 1, 2014 at 15:34

James Henstridge

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3 Comments

Chakradar Raju Over a year ago

Thanks, thats what I did, but was wondering if I will miss some other encoded characters like space

James Henstridge Over a year ago

The Go QueryEscape function just encodes spaces as plus, and uses percent encoding for other characters not valid in a URL query component. So replace and decodeURIComponent on the JS side should handle everything.

Chris Tomich Over a year ago

Just a note, the correct way to do a replace all would be to enclose the search string in a RegExp global modifier like so decodeURIComponent("%2f+%2b".replace(/\+/g, " "))

Mitar · Accepted Answer · 2022-03-27 17:08:21Z

1

If you control Go side, use url.PathEscape and then you can simply use decodeURIComponent without anything extra.

answered Mar 27, 2022 at 17:08

Mitar

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